From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f74.google.com (mail-pj1-f74.google.com [209.85.216.74]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6A923175A7D for ; Thu, 7 May 2026 20:34:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.74 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778186077; cv=none; b=NJoNlCLyfIyda55ywc2gof4E33eJHB9aHtSFURdyp1v3dL8cQ4uwF6P5ioOEZGOXejh/Nf+5fg6XdgWNzrtmqVUsTd3GTua1eu1r6IkEj35I0U+9RqmLpoG4A0Z3ZoXzwS5CWhaoEbrZIM0bEAj4arBZJrgXDfI3+xgmXZgMv8c= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778186077; c=relaxed/simple; bh=EmaFnaJMd6RXOTK/VecAQDt9Nc0voXI5PxK5gicU1M0=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=NmCbJ0BRCzI+os1UYSqIeqAq+e2s115V3v2p3J0a0Tvo0VO+XkIepx2d0KYNTDjHYdkeS/dVHEnNy//cgxLJTaLyZddDkhj2y47W4299+Ix4KPw6zVUZyEWgOM7JufH/Qh/jVLM6HpiFhNw+aNGYDLjdlpJHOzuQcQdpbSPKL4g= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--ackerleytng.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=nBtm5sMg; arc=none smtp.client-ip=209.85.216.74 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--ackerleytng.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="nBtm5sMg" Received: by mail-pj1-f74.google.com with SMTP id 98e67ed59e1d1-364c0e269e5so1502994a91.2 for ; Thu, 07 May 2026 13:34:35 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1778186075; x=1778790875; darn=lists.linux.dev; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=wMq4ZGb8sxP9J+x/Ocr+9N7VOn891ReIc+MoQxb2Bzc=; b=nBtm5sMgAgTOp4LrXwP0PIdxcZKc+G/k17tJENWYENctdzc8Y7c6iXQPrN2RW1rVTB 6dd5107qAr9ZhxHjkp+mOeON7EFMf3WgVx+aUm9xyEBbnI73JRa+NzgGZfvJBkjl6VC+ rcO/cytalWiiPeAa+GvCwboEVIpjdNT4KZiFG0/fEQOiRphzwJqOvd3bQ/4zsOgPJnVt M+Qf37FJuJ8C2wglk/rwviLYBwr9JPSplsBt3JVYsYEkP8XncFt29sMqD5LTQGCShlDz BhZDFiJnVeVu9YhX9LHNVW8vSBiYkHqxDdPDjTiJna5MJjR4808lB5qafV59CWaRR1TA +hhA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1778186075; x=1778790875; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=wMq4ZGb8sxP9J+x/Ocr+9N7VOn891ReIc+MoQxb2Bzc=; b=LVPNAT0af1sG4Y7y71Q3Gx+DVMVqNTgcHlAzyEtfyGPWcAc9cADO61j/ezstpFmyou 1ob625QsZB79a1iw9LdGDcTbURaRdpNm2DQgg6k+OBGkozwuB/7USUQaZ6ydmYjcKc9w 5rRMKi1K6qmCcpYiDj5mRMOtfFWsnAjzb1ocSUx6QF/zC2HiOmNZNSMRZ1RMP/6NxTSv Xvlx3LF97bwsPvJpAcfaKbBi4kecrSqd05unfRnCcRdo0XYIehW4x0yhPthsXevOSjm6 OXcMq0TF7pl56jCYWpW76u528iRFZfp50G+E+oyUzOtXQg9bqDv8srCDQ0x3nxfloovk 4qNw== X-Forwarded-Encrypted: i=1; AFNElJ/8pVQtnKHh8s+fu/xooxyorJg5aOt9+TB/S58zeMi4faGJaNMDiQzt031EeQeXj07c2CrLl0jepBHT@lists.linux.dev X-Gm-Message-State: AOJu0YyxnwwApPYjVzkgusUlQXldHzZZTNWuywbVKhM4pgUZNP7UB6Kv EqYOAXIAHyJZHC0I9uiUQnjR79RUnJCLe0zCh+I47ayC1xvsBb01Q7gTMCj7PhcZM+ZTkGNC4EV x39Uyq8LA2J6UO5tifWXDl2UY/g== X-Received: from pgbcs6.prod.google.com ([2002:a05:6a02:4186:b0:c7e:68a1:910c]) (user=ackerleytng job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6a20:1584:b0:39c:c07:1450 with SMTP id adf61e73a8af0-3aa5a9da657mr10646690637.42.1778186074357; Thu, 07 May 2026 13:34:34 -0700 (PDT) Date: Thu, 7 May 2026 13:34:21 -0700 In-Reply-To: <20260507-gmem-inplace-conversion-v6-0-91ab5a8b19a4@google.com> Precedence: bulk X-Mailing-List: linux-coco@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260507-gmem-inplace-conversion-v6-0-91ab5a8b19a4@google.com> X-Mailer: git-send-email 2.54.0.563.g4f69b47b94-goog Message-ID: Subject: [POC PATCH 0/5] guest_memfd in-place conversion selftests for SNP From: Ackerley Tng To: devnull+ackerleytng.google.com@kernel.org Cc: ackerleytng@google.com, aik@amd.com, akpm@linux-foundation.org, andrew.jones@linux.dev, aneesh.kumar@kernel.org, axelrasmussen@google.com, baohua@kernel.org, bhe@redhat.com, binbin.wu@linux.intel.com, bp@alien8.de, brauner@kernel.org, chao.p.peng@linux.intel.com, chrisl@kernel.org, corbet@lwn.net, dave.hansen@linux.intel.com, david@kernel.org, forkloop@google.com, hpa@zytor.com, ira.weiny@intel.com, jgg@ziepe.ca, jmattson@google.com, jthoughton@google.com, kas@kernel.org, kasong@tencent.com, kvm@vger.kernel.org, liam@infradead.org, linux-coco@lists.linux.dev, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-mm@kvack.org, linux-trace-kernel@vger.kernel.org, mathieu.desnoyers@efficios.com, mhiramat@kernel.org, michael.roth@amd.com, mingo@redhat.com, nphamcs@gmail.com, oupton@kernel.org, pankaj.gupta@amd.com, pbonzini@redhat.com, pratyush@kernel.org, qi.zheng@linux.dev, qperret@google.com, rick.p.edgecombe@intel.com, rientjes@google.com, rostedt@goodmis.org, seanjc@google.com, shakeel.butt@linux.dev, shikemeng@huaweicloud.com, shivankg@amd.com, shuah@kernel.org, skhan@linuxfoundation.org, steven.price@arm.com, suzuki.poulose@arm.com, tabba@google.com, tglx@kernel.org, vannapurve@google.com, vbabka@kernel.org, weixugc@google.com, willy@infradead.org, wyihan@google.com, x86@kernel.org, yan.y.zhao@intel.com, youngjun.park@lge.com, yuanchu@google.com Content-Type: text/plain; charset="UTF-8" With these POC patches, I was able to test the set memory attributes/conversion ioctls with SNP. After allowing src_addr to be NULL, SNP_LAUNCH_UPDATE can accept NULL for source address and the SNP VM runs fine. :) Ackerley Tng (5): KVM: selftests: Initialize guest_memfd with INIT_SHARED KVM: selftests: Use guest_memfd memory contents in-place for SNP launch update KVM: selftests: Make guest_code_xsave more friendly KVM: selftests: Allow specifying CoCo-privateness while mapping a page KVM: selftests: Test conversions for SNP .../selftests/kvm/include/x86/processor.h | 2 + tools/testing/selftests/kvm/lib/kvm_util.c | 12 +- .../testing/selftests/kvm/lib/x86/processor.c | 13 +- tools/testing/selftests/kvm/lib/x86/sev.c | 3 +- .../selftests/kvm/x86/sev_smoke_test.c | 222 +++++++++++++++++- 5 files changed, 234 insertions(+), 18 deletions(-) -- 2.54.0.563.g4f69b47b94-goog